EP 1665209 A1 20060607 - AN ELECTRONIC BOOK WITH IMPROVED IMAGE QUALITY
Title (en)
AN ELECTRONIC BOOK WITH IMPROVED IMAGE QUALITY
Title (de)
ELEKTRONISCHES BUCH MIT VERBESSERTER BILDQUALITÄT
Title (fr)
LIVRE ELECTRONIQUE A QUALITE D'IMAGE AMELIOREE
Publication
Application
Priority
- IB 2004051604 W 20040830
- US 49951303 P 20030902
Abstract (en)
[origin: WO2005022502A1] Image quality is improved in an electronic reading device (300, 400) such as an electronic book using electrophoretic displays by shifting the starting row and/or column on which successive pages are displayed in turn. For example, a first page (530, 830) may be displayed starting at a first location, a second page (630, 930) is displayed starting at a second location, a third page (730, 1030) is displayed starting at a third location, and so forth. By shifting the starting location, e.g., row and/or column, of each page relative to the previous page, image retention effects caused by repeated image/text updates are significantly reduced, resulting in a higher quality image. The need for a periodic erase or reset of the display to remove image retention effects is also reduced, thereby reducing power consumption and increasing user convenience.
IPC 1-7
IPC 8 full level
G09G 3/34 (2006.01)
CPC (source: EP KR)
G09G 3/344 (2013.01 - EP KR); G09G 2320/046 (2013.01 - EP KR)
Citation (search report)
See references of WO 2005022502A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005022502 A1 20050310; CN 1846244 A 20061011; EP 1665209 A1 20060607; JP 2007518111 A 20070705; KR 20060132800 A 20061222; TW 200517940 A 20050601
DOCDB simple family (application)
IB 2004051604 W 20040830; CN 200480025197 A 20040830; EP 04769884 A 20040830; JP 2006525247 A 20040830; KR 20067004377 A 20060302; TW 93126097 A 20040830